Hilbert module realization of the square of white noise and finite difference algebras

被引:4
作者
Accardi, L [1 ]
Skeide, M
机构
[1] Univ Roma Tor Vergata, I-00173 Rome, Italy
[2] Brandenburg Tech Univ Cottbus, Lehrstuhl Wahrscheinlichkeitstheorie & Stat, Cottbus, Germany
关键词
Fock space; creation; annihilation and number processes; white noise; Feinsilver's finite difference algebra; Hilbert module; Boukas representation; Kolmogorov decomposition;
D O I
10.1023/A:1026644229489
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We develop an approach to the representations theory of the algebra of the square of whitr noisy based on the construction of Hilbert modules. We held the unique Fork representation and show that the representation space is the usual symmetric Fock space. Although we started with one degree of freedom we end up with countably many degrees of freedom. Surprisingly, our representation turns out to have a close relation to Feinsilver's finite difference algebra. In fact, there exists a holomorphic image of the finite difference algebra in the algebra of square of white noise. Our representation restricted to this image is the Boukas representation on the finite difference Fock space. Thus we extend the Boukas rt presentation to a bigger algebra, which is generated by creators, annihilators, and number operators.
引用
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页码:683 / 694
页数:12
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